SolarEdge Inverters
51 fault codes documented
LAN Disconnected — Ethernet cable not connected
The inverter cannot communicate via Ethernet because the physical cable is not connected or is faulty. This means the inverter might not be sending data or receiving updates.
DHCP Failed or Invalid DHCP Config — Cannot get IP address
The inverter failed to get a valid IP address from your network's DHCP server. Alternatively, the static IP settings in the inverter do not match your router's configuration.
Gateway Ping Failed — Cannot connect to router
The inverter cannot reach your router or the first network switch. This indicates a problem with the network path between the inverter and the gateway.
Server Ping Failed — Cannot connect to SolarEdge server
The inverter is unable to reach the SolarEdge servers. This prevents data from being sent and may affect monitoring.
Server x Ping Failed — Cannot connect to redundant server
The inverter failed to connect to a specific redundant SolarEdge server. This is part of a backup communication system.
7th bit
These bits represent an eight-bit communication status. If any bit is '0', it indicates an error in that specific communication channel. For detailed troubleshooting, refer to the 'Troubleshooting Communication - S_OK is Not Displayed' section.
Tcp Connect. Failed — Cannot establish server connection
The inverter could not establish a TCP connection with the SolarEdge server. This is a critical communication failure.
AC Current Surge — High output currents detected
The inverter has detected unusually high AC output currents. This could be caused by changes in grid voltage or nearby electrical load switching.
Ground Current - RCD — High ground currents detected
The inverter's internal hardware detected significantly high ground currents, possibly due to insufficient insulation to the ground. This is a safety concern.
AC Voltage Too High (Line 1/2/3) — AC voltage surge detected
The inverter measured a substantially high, sudden output voltage on the AC line. This can be dangerous and damage equipment.
DC Voltage Too High — Input DC voltage exceeds maximum level
The DC voltage coming from the solar panels is too high for the inverter to handle. The inverter will shut down to protect itself.
Hardware Error — Internal hardware error
A general internal hardware component within the inverter has failed. This requires professional diagnosis.
Temperature Too High — Over temperature detected
The inverter has overheated. This can happen if ventilation is poor or the ambient temperature is too high.
Faulty Temp. Sensor — Temperature sensor is broken or disconnected
The temperature sensor inside the inverter is not working correctly. This prevents the inverter from accurately monitoring its temperature.
Isolation Fault PV — PV array is not isolated from ground
The inverter detected that the solar panel array is not properly isolated from the ground. This is a serious safety issue due to potential electrical shock hazards.
Faulty AC Relay — AC relay failed during startup
The AC relay, which connects the inverter to the grid, failed during its self-test. The inverter cannot safely connect to the AC power.
Hardware Error — Internal hardware error
A general internal hardware component within the inverter has failed. This requires professional diagnosis.
RCD Sensor Error — RCD measurement failed
The Residual Current Device (RCD) sensor failed during the inverter's startup test. This sensor is important for detecting ground faults.
Phase Balance Error — Phase balance exceeded limit
The inverter's monitoring system detected that the electrical load is not balanced across the different phases. This can affect grid stability.
AC Voltage Too High (Line 1/2/3) — Grid voltage is above the limit
The AC voltage from the grid is higher than the country's allowed limit. This can damage the inverter and other connected appliances.
AC Voltage Too Low — Grid voltage is below the limit
The AC voltage from the grid is lower than the country's allowed limit. This can prevent the inverter from operating correctly.
AC Freq Too High (Line 1/2/3) — Grid frequency is above the limit
The frequency of the AC power from the grid is higher than the allowed limit for your country. This can affect the inverter's performance.
Islanding — AC grid voltage malfunctions
The inverter has detected an issue with the AC grid voltage, causing it to shut down to prevent unsafe operation. This is a safety measure when the grid is unstable or disconnected.
No Country Selected — Inverter not configured for a country
The inverter has not been set to a specific country. This is required for proper operation according to local grid standards.
Phase Unbalance — Load imbalance between phases
The inverter's phase balancing feature has detected an imbalance in the electrical load across the phases. This setting might need adjustment.
AC Voltage Too High (Line 1/2/3) — AC voltage surge
The internal hardware measured a substantially high sudden output voltage on the AC line. This indicates a potential problem with the grid or connection.
AC Voltage Too Low — Grid voltage below limit
The AC voltage from the grid is lower than the country's allowed limit. This can prevent the inverter from operating correctly.
AC Voltage Too High (Line 1/2/3) — Grid voltage above limit
The AC voltage from the grid is higher than the country's allowed limit. This can damage the inverter and other connected appliances.
Ground Current - RCD — Ground current surge detected
The inverter's internal hardware detected significantly high ground currents, possibly due to insufficient insulation to the ground. This is a safety concern.
AC Freq Too High (Line 1/2/3) — Grid frequency above limit
The frequency of the AC power from the grid is higher than the allowed limit for your country. This can affect the inverter's performance.
AC Freq Too Low (Line 1/2/3) — Grid frequency below limit
The frequency of the AC power from the grid is lower than the allowed limit for your country. This can prevent the inverter from operating correctly.
AC Over Current Line 1/2/3 — Grid error detected
The inverter has detected an overcurrent condition on one or more AC lines from the grid. This can be a safety hazard.
AC Voltage Too High Line 1/2/3 — Grid error detected
The inverter has detected that the AC voltage on one or more lines is too high. This can damage equipment.
DC Voltage Too High — Input DC voltage exceeds maximum level
The DC voltage coming from the solar panels is too high for the inverter to handle. The inverter will shut down to protect itself.
UDC Min / DC Voltage Too Low — Input DC voltage below minimum level
The DC voltage from the solar panels is too low for the inverter to operate. This may happen if there is not enough sunlight or if there is an issue with the solar array.
Temperature Too High — Over temperature detected
The inverter has overheated. This can happen if ventilation is poor or the ambient temperature is too high.
Wrong AC connection — AC line connections are incorrect
The AC power lines are connected to the wrong terminals on the inverter. This can prevent proper operation and may cause damage.
Isolation Fault PV — PV Isolation fault
The inverter has detected that the solar panel array is not properly isolated from the ground. This is a serious safety issue due to potential electrical shock hazards.
Faulty AC Relay — AC relay failed during wake-up tests
The AC relay, which connects the inverter to the grid, failed during its self-test. The inverter cannot safely connect to the AC power.
Hardware Error — Internal hardware error
A general internal hardware component within the inverter has failed. This requires professional diagnosis.
Ground Current – RCD — Internal hardware error
An internal hardware error is preventing the RCD sensor from functioning correctly. This sensor monitors for ground faults.
Fan # Failure — A fan is not working
One or more of the inverter's cooling fans are not functioning. Proper cooling is essential for the inverter's operation and longevity.
Green LED blinking — Standby mode
The green LED is blinking, indicating the inverter is in standby mode. It is waiting to reach its required operating voltage before starting power production.
Green LED off — Not producing power
The green LED is off, meaning the inverter is not currently producing power. This could be due to various reasons including night time or an error.
LCD displays 'Waking Up' — Restarting after error
The LCD panel shows 'Waking Up' with a countdown timer. This means the inverter is restarting itself after an error, following a necessary reconnection delay.
Red LED blinking — Shutting down due to fault
The red LED is blinking, which means the inverter is shutting down because of a detected fault or error.
Red LED on — Fault detected
The red LED is lit solid, indicating that there is an error or fault within the inverter. You need to check the LCD panel for specific error details.
S_OK not displayed — Communication issue
The 'S_OK' status is not shown, indicating a problem with the inverter's communication. This affects data reporting and monitoring.
SW Error — Internal software error
An error within the inverter's internal software has occurred. This can affect various functions of the inverter.
xxxxxxxx (Ethernet status) — Communication status string
This eight-bit string (1s and 0s) shows the status of the Ethernet communication connection. '1' means OK, '0' indicates an error at that specific bit location.
Yellow LED blinking — Receiving data or shutting down
The yellow LED blinking means either the inverter is receiving monitoring information from power optimizers, or it is in the process of shutting down.